Chess Stalker — Free Chess Opponent Analysis

Analyze any Lichess, Chess.com or FIDE player's openings, weaknesses, blunder patterns and psychological profile. Train against a Twin Bot that replicates your opponent's style. Search by username or FIDE ID across 11 million+ games. Free to use, no signup required.

What you get

Opponent weakness analysis — opening repertoire, common blunders, time pressure patterns
Twin Bot — practice against an AI clone of your opponent's exact playing style
FIDE OTB database — 11 million+ tournament games and 1.7 million+ rated players
Stockfish-powered analysis with depth-25 evaluations
Multi-platform: Lichess, Chess.com, and FIDE in one place
Head-to-head comparison, Nemesis detection, Stalker Score

How it works

Search any Lichess, Chess.com username or FIDE player
Get instant scouting report with weaknesses and patterns
Prepare your strategy and practice against the Twin Bot

GM

Ly, Moulthun

AUS AUS·Born 1991·FIDE #3204405·785 Games

Classical2469764 Games

Rapid246012 Games

Blitz24689 Games

Statistics

785

Total

350

Wins

257

Draws

178

Losses

45%33%23%

Play Style

What you need to know before facing them

Elite accuracy: 93.2% average

High resilience (60%): Dangerous even when losing

Solid conversion: 84%

Very consistent (91%)

Very precise: only 0.1 blunders/game

Dominates 1.Nf3 ♔ (82% in 33 games)

Deep Analysis

Stockfish 18 · Classical games · 70 analyzed

Accuracy by phase

Opening96.6%

Middlegame93.5%

Endgame94.7%

Clutch Factor

Performance under pressure

+6%

Winning (+2 or more)95%

34 Games

Equal position93%

23 Games

Losing (-2 or more)89%

13 Games

Problematic Pieces

Which pieces cause most errors?

♖

33%

17 errors

♔

17%

9 errors

♙

15%

8 errors

♕

15%

8 errors

♗

12%

6 errors

♞

8%

4 errors

Critical Moment

When does the first serious error occur?

Move 52average

1-15

16-25

26-35

36-45

46+

50% of blunders occur between move 46+. Keep tension until that moment.

Error Heatmap

Where do most errors occur?

2

3

3

3

2

2

3

2

4

3

abcdefgh

Many

Few

Critical squares

e24 err

b23 err

b63 err

d53 err

f63 err

e2/b2 concentrate most errors. Force decisions in those zones.

Recent Games

D

Habla, Jony2161

2. The Rooky Internationa... · 19 Oct 2024

½-½

W

Laohawirapap, Prin2387

2. The Rooky Internationa... · 19 Oct 2024

1-0

W

Nimay Agrawal1971

2. The Rooky Internationa... · 19 Oct 2024

0-1

D

Salvador, Louie2112

2. The Rooky Internationa... · 19 Oct 2024

½-½

W

Baba, Masahiro2145

2. The Rooky Internationa... · 19 Oct 2024

1-0

L

Chernyavsky, Alexander2339

2. The Rooky Internationa... · 19 Oct 2024

0-1

Openings

Based on player games

Weaknesses

EXPLOIT!

White

No significant weaknesses detected as White

Black

No significant weaknesses detected as Black

Strengths

AVOID

White

Sicilian: Rossolimo

72.7%

11 Games·Wins

1.e4 c5 2.Nf3 Nc6 3.Bb5

Caro-Kann: Advance

56.3%

16 Games·Wins

1.e4 c6 2.d4 d5 3.e5

Black

Nimzo-Indian: Rubinstein

63.6%

11 Games·Wins

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3

Sicilian: e6 Systems

52.3%

65 Games·Wins

1.e4 c5 2.Nf3 e6

Critical Blunders

Tactical errors analyzed with Stockfish

10 errors

▶

#35Rgd1??

Tactics

vs Chernyavsky

Rapid·2024

▶

#29h6??

Tactics

vs Salvador

Rapid·2024

▶

#44Rg2??

Endgame

vs Murzin

OTB·2020

▶

#41Rbe8??

Endgame

vs Tsvetkov

OTB·2020

▶

#44Ne5??

Endgame

vs Kobalia

OTB·2020

▶

#41Qg5??

Endgame

vs Makarian

OTB·2020

▶

#69b5??

Endgame

vs Habla

OTB·2019

▶

#23Bc2??

Tactics

vs Varshini

OTB·2019

▶

#29gxf6??

Tactics

vs Theodorou

OTB·2019

▶

#58Bb6??

Endgame

vs Zierk

OTB·2019

Endgame Statistics

23 endgame categories analyzed — discover where they collapse under pressure

Repertoire

☰ All

♟ Classical

⚡ Rapid

🔥 Blitz

PRO

·

2024

2023

2022

2021

2020

2019

PRO

8

7

6

5

4

3

2

1a

b

c

d

e

f

g

h

Starting Position

385 Games

50%33%17%

Move	Games	Performance	%
1.e4	263		65%
1.d4	74		65%
1.Nf3 Strong	33		82%
1.c4 Strong	14		71%
1.b3 Strong	1		100%

1.e4

65%

263

1.d4

65%

74

1.Nf3

82%

33

1.c4

71%

14

1.b3

100%

1

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